How To Replace Fuel Injector 1999-2005 Pontiac Grand Am
Created on: 2013-09-30
Watch this video to learn how to fix your fuel injectors. The experts at 1A Auto show you how to replace the fuel injectors on your 99-05 Pontiac Grand Am or Oldsmobile Alero.
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step 1 :Removing the Spark Plug Wires
- Unplug each of the spark plug wires - remember their order
- Remove the spark plug wires from their clip
- Remove the two vacuum hoses
- Remove the 10mm bolts from the throttle body bracket
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step 2 :Removing the Air Intake
- Loosen the air intake hose clamps with a flat blade screwdriver
- Remove the air intake hose from the intake manifold
- Disconnect the vacuum hose on the air intake hose
- Disconnect the EGR harness
- Remove the air intake hose from the air box
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step 3 :Disconnecting the Intake Manifold
- Remove the two 13mm bolts from the throttle body
- Remove the 10mm bolts from the top of the coil pack
- Remove the 13mm bolts from the bottom of the coil pack
- Slide back the hose clamp with a pair of pliers on the back of the intake manifold
- Disconnect the hose
- Remove the two 7mm bolts from the back of the MAP sensor
- Disconnect the MAP sensor harness
- Remove the sensor
- Remove the hose with a flat blade screwdriver
- Remove the two 10mm bolts from the EGR Valve
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step 4 :Removing the Upper Intake Plenum
- Remove the 10mm bolts from the upper intake plenum
- Remove the 13mm nut from the upper intake plenum
- Remove the 10mm bolt below the right side of the intake manifold
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step 5 :Disconnecting the Coolant Hoses
- Remove the cap on the radiator overflow bottle
- Slide a drip pan underneath the drain plug
- Remove the drain plug and drain the coolant
- Pry off the coolant hoses
- Remove the hoses from the top of the manifold
- Replace and tighten the drain plug
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step 6 :Disconnecting the Fuel Injectors
- Lift the upper intake plenum up and aside
- Remove the intake gaskets
- Disconnect the harness on the right side of the manifold
- Remove the two 10mm bolts from the fuel injectors
- Vacuum out the top of the engine
- Carefully pry the fuel injectors up and out with a pry bar
- Lift the fuel injectors out
- Disconnect each fuel injector harness from its clip
- Make sure the o-rings are on the fuel injectors
- Lift and set the fuel injector aside
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step 7 :Installing the Fuel Injectors
- Replace the clip on each injector
- Place white grease on the edge of each fuel injector
- Insert the fuel injector harnesses into place by their appropriate number
- Line up the fuel injectors and push them down into the manifold
- Replace the 10mm bolts on the fuel injectors
- Connect the alternator harness
- Connect the other harness on the other side of the manifold
- Place the new gaskets on the intake manifold
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step 8 :Installing the Coolant Hose
- Scrape off the old o-ring from the coolant tube
- Place the new o-ring on the coolant tube
- Push the hose into the manifold
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step 9 :Installing the Upper Intake Manifold Plenum
- Replace the 10mm bolt below the right side of the intake manifold
- Replace the 13mm nut on the lower part of the intake manifold
- Insert the upper intake manifold plenum into place
- Insert the 10mm bolts from the upper intake plenum
- Insert the 13mm nut from the upper intake plenum
- Torque the 10mm bolts to 18 foot-pounds
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step 10 :Installing the MAP Sensor and Throttle Body
- Insert the two 7mm bolts from the back of the MAP sensor bracket
- Connect the MAP sensor to the lead
- Connect the sensor to the intake manifold
- Tighten the 7mm bolts to the MAP sensor
- Insert the 10mm bolts from the top of the coil pack
- Insert the 13mm bolts from the bottom of the coil pack
- Insert the hose and hose clamp on the back of the intake manifold
- Insert the vacuum hoses to the intake manifold
- Remove the rubber plug on the old manifold plenum to the new one
- Tighten the two 13mm bolts from the throttle body
- Tighten the 10mm bolts from the throttle body bracket
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step 11 :Installing the EGR Valve
- Slide the hoses onto the coolant line
- Tighten the hoses with the clamp and pliers
- Place the gasket below the EGR
- Insert the EGR and tighten the 10mm bolts
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step 12 :Installing the Air Intake
- Loosen the air box with a Phillips screwdriver
- Push the air intake hose into the throttle body
- Tighten the Phillips screws on the air box
- Tighten the air intake hose clamps with a flat blade screwdriver
- Connect the vacuum hose on the air intake hose
- Connect the EGR wiring harness
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step 13 :Installing the Spark Plug Wires
- Clip in the spark plug wires clip
- Plug each of the spark plug wires by number
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step 14 :Refilling the Coolant
- Insert a funnel into the coolant bottle
- Refill the coolant as needed
Tools needed
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Funnel
13mm Socket
Flat Blade Screwdriver
Vacuum
Phillips Head Screwdriver
Pry Bar
White Grease
Drain Pan
10mm Socket
Ratchet
Needle nose pliers
Brought to you by 1AAuto.com, your source for quality replacement parts and the best service on the Internet.
Hi, I'm Mike from 1A Auto. I hope this how-to video helps you out, and next time you need parts for your vehicle, think of 1AAuto.com. Thanks.
In this video, we're going to show you how to replace a fuel injector on this 1999 Pontiac Grand Am. It has the 3.4-liter V6. Procedure is the same for most GM cars with this 3.4-liter V6 engine. The tools you'll need include a 10mm and 13mm socket and ratchet, a flat blade screwdriver, a Phillips screwdriver, a pair of pliers, a drip pan, a funnel with a screen or filter, a vacuum, a pry bar, and some white grease.
Remove the spark plug wires in the front of your engine. There's two, four, and six. You need to make sure that you plug them in in the right order. Again, the front one closest to the passenger side is two, then the middle one is four, and the last one is six. If you need to, put some tape around them and mark them so you put them back on correctly. To get them off, you basically want to pull and twist it at the same time and they'll come free. Now you just want to disconnect those spark plug wires. There's a clip up there, you just want to pull that off. Then you just want to remove that hose from the top and that hose as well. On this clip right here, you'll see there's a 10mm bolt, just go ahead and remove that.
Now what you want to do is loosen up the clamp on the air intake hose. Using a flat blade screwdriver, just loosen up the bolts on those two clamps. With those loosened up, you can pull the hose off. You just want to pull that back and away and disconnect the hose connected to that top of that and the harness on the side, and pull it free and away. Now, as you can see right here, there's two 13mm bolts: one up the top corner and one diagonally across from it. You just want to go ahead and remove those.
Next, what you want to do is remove the bolts that secure the coil pack. There's actually different sized bolts at the top too, ours is 10mm. In the bottom, on the back there is 13mm. You just want to go ahead and remove those. Using a pair of pliers, you just want to grip that clip and slide it back on the hose, and then you just want to use a flat blade screwdriver to pry that hose off. Now, right here, there are two 7mm bolts. You just want to go ahead and remove those. Now with those bolts removed, you can just disconnect the harness on the bottom and pull that up and out. Then. using a flat blade screwdriver, just pry that hose off.
Now, on either side of the EGR, you can see that there are two 10mm bolts. You just want to go ahead and remove those. Now what you want to do is remove this upper intake plenum, and what you're going to need is a 10mm socket to remove the 10mm bolts. Then there's one 13mm nut right there, and you just want to go ahead and remove all those. Now, you just want to remove this 10mm bolt right here, then you just want to remove the cap on your radiator overflow bottle. Then you want to take a drip pan and slide it underneath the engine. Right underneath these hoses right here. Just want to take some pliers, push those clamps, slide them back on the hose, and then we're going to take a flat blade screwdriver and we're just going to pry that hose back off.
It's important to disconnect these hoses. You're going to see a lot of coolant that comes out that's why the drip pan's under there. We actually leave the screwdriver in there to help drain all this coolant. However, there is an easier way to drain this coolant, in our case, this is how we had to do it, and you can do it this way but what you should do to drain your coolant quicker as you can see there's actually a bolt right there. You just want to loosen that up and drain the coolant that way. Ours is actually broken, so we didn't have a choice. Once the coolant's pretty much strained out, you still want to make sure those hoses are pried off, and then you can just pull that hose free and that hose free.
Next thing you want to do is just lift this up and we can just set that aside. Then you want to just remove these gaskets. Our new kit comes with new ones, so we won't be needing those. You just want to disconnect this connector, and, right here, you can see that there are two 10mm bolts. You want to go ahead and remove those. Now, what you want to do is you want to just vacuum out the top of the engine there, get all the dirt and stuff that builds up in there. Now, what you want to do is, using a pry bar, just pry up carefully, and you just want to pry the fuel injectors up and out. Once you've pried them enough, you should be able to just lift them out.
Now with the fuel rail up, you want to just pull. There's a little metal clip up above the fuel injector. Pull that out and then just move the fuel injector back and forth and pull it free. There's actually the O-ring stayed up inside there, so, just using a small flat blade screwdriver, if this happens, you just want to pull that O-ring back out and put it back on to the fuel injector. Then you can push your new fuel injector up in there, and you want to replace that clip. Now, he's just putting a little white grease around the edges of each fuel injector. You can now put your fuel injector leads back into place. They are numbered so just put them in order. It does have the number to match up above each fuel injector. Once you have the leads in place, you can line up those fuel injectors and push them down into place.
You want to just replace these two bolts right here. Now, you want to connect the lead right here in your alternator and this lead down here. Now, you want to take your new gaskets from that gasket pack from 1A Auto and just put them here into place, just one for each side. Now, down here on this tube, you just want to scrape off the old O-ring, just kind of clean that up a little bit and then your gasket pack. There's a new O-ring and you just want to put that into place and push that line into place. Now you just want to replace the nut down by that line you just plugged back in. There's actually another one right below it, and you want to replace that one as well. You want to take this bracket that's in that gasket set from 1A Auto.
Take your upper intake plenum, and you want to just line it up make sure this harness goes up to that hole in the back on your right there. Then just put that plenum into place. You want to just replace all the bolts that go along this. Make sure that if there's a bracket that goes in that spot. You put that bolt down to the bracket like right here. In this bracket, you want to make sure that the harness goes underneath it, and you want to just take this, plug it in right next to that harness, and then plug the other end up here. Then take this, plug that lead into it, and set that down into that bracket. And you want to just tighten those bolts.
Then you want to just replace your coil pack bolts to secure the coil pack back into place. Tighten those up real quick. You want to just put that hose back into place. Take the clamp using pliers, slide it forward, and push them into place. You want to push this hose back into place same thing with this one. Then, you want to replace the two bolts back down underneath the coil pack. You want to just reach down there using a flashlight to see where the holes are and put those back. Do it by hand first and then tighten them up. Then you want to bolt your throttle body back into place.
Then you want to replace that nut on the bottom corner of the throttle body, and just replace the bolts up above the throttle body and tighten them. Take this hose here, push it back, and then slide it down into place. Then you want to take your pair of pliers, push that clamp together, and slide that forward. Then you want to take this hose, and you can see, using a flat blade screwdriver, he's just positioning the hose onto that into place there and it just slides down into place. Again, take pliers, push the clamp forward, and replace that bolt and tighten it.
Now, before putting your EGR on, put the new gasket from that gasket pack into place, and then line up your EGR. Put that into place and replace the bolt on either side. Now, what you want to do is put the air intake hose back in. You want to use a Phillips screwdriver to loosen up those bolts.
Pull the intake cover back. Put the hose into place and then slide that cover forward until you can snap it down into place. Just want to tighten up those Phillips screws. Get a flat blade screwdriver and tighten up the bolts on the clamps. Just take this connector, plug it back in, and then you want to take these hoses and put them into this clip.
Right down here, you can see there's a hole, and over here there's another hole. You want to take this and fit that down in behind and into the hole there. Wrap it around and plug it into the whole at the top of that air intake hose. Then you want to take your EGR connector and plug that back in. Now, you can plug in your spark plug wires. You just want to clip back on right there and then push those wires down into place. Now, using a funnel with a screen or filter, just pour that coolant that came out earlier back into your radiator overflow bottle and you're all set.
We hope this video helps you out. Brought to you by www.1AAuto.com, your source for quality replacement parts and the best service on the Internet. Please feel free to call us toll-free, 888-844-3393. We're the company that's here for you on the Internet and in person.
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